Yep, that's the tennis medical term of the day and what has forced Australia's Alicia Molik to pull out of the French Open. In layman's terms vestibular neuronitis is a virus that attacks the inner ear and causes all sorts of balance difficulties, clearly a problem for a tennis player.
"She has decided there was just not much point pushing herself to be ready on the clay when she really needs to rest. She's better off here under the watchful eye of the doctor and now she's probably going to lay low for a good few days and get that rest she needs," said Molik's manager.
Molik discussed the problem last week on Australian radio. "Every time I do just a little bit of exercise I'm really exhausted and my head is spinning. I've done a bit in the gym but I haven't even been able to get on the court."